This Procedure Memorandum supersedes Appendix A: Guidance for Aerial Mapping and Surveying of the Guidelines and Specifications for Flood Hazard Mapping Partners (Guidelines) in key areas (defined in the Procedure Memorandum Attachments), and must be implemented beginning with all topographic data collected or procured by FEMA in FY 2010. When procuring topographic data under the Risk MAP Program, the Mapping Partner assigned to obtain topographic data or perform independent QA of topographic data must meet the specifications detailed in this Procedure Memorandum’s attachments. The attachments align FEMA’s high quality topographic specifications, found in Appendix A of the Guidelines, with the United States Geological Survey (USGS) Lidar Guidelines and Base Specifications v13 so that data procured and used by the Federal government is consistent across agencies and is updated to industry standards.